Add explicit handling of warnings

[blink1073]

No description provided.

[blink1073]

Wow, this is s tricky one, I can't figure out the spelling of how to get jupyter server --ServerApp.jpserver_extensions to work from the command line. Looking at the test in traitlets, it seems like it should be something like:

jupyter server --ServerApp.jpserver_extensions "myextension=enabled True" but that gives me:

[C 2022-04-01 07:47:07.069 ServerApp] Bad config encountered during initialization: The 'jpserver_extensions' trait of a ServerApp instance expected a dict, not the list ['myextension=enabled True'].

[blink1073]

This simple test works without warnings:

from traitlets.config.application import Application
from traitlets import Dict

class Foo(Application):

    bar = Dict().tag(config=True)

    def start(self):
        print(self.bar)
        return super().start()


if __name__ == '__main__':
    Foo().launch_instance()

$ python test.py --Foo.bar foo=fizz
{'foo': 'fizz'}

[kevin-bates]

I've always struggled with this. I just found these forms to work (and do the right thing):

jupyter server --ServerApp.jpserver_extensions="elyra=False"
jupyter server --ServerApp.jpserver_extensions=elyra=True
jupyter server --ServerApp.jpserver_extensions elyra=False
jupyter server --ServerApp.jpserver_extensions "elyra=True"

Not sure what would happen if there were multiple traits for each extension and why/how it knows the boolean value applies to the enabled trait.

[blink1073]

Thanks! I updated the docs as well

[codecov-commenter]

Codecov Report

Merging #771 (34e572a) into main (25ec3ed) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #771      +/-   ##
==========================================
+ Coverage   70.32%   70.34%   +0.02%     
==========================================
  Files          62       62              
  Lines        7554     7554              
  Branches     1248     1248              
==========================================
+ Hits         5312     5314       +2     
+ Misses       1859     1858       -1     
+ Partials      383      382       -1     

Impacted Files	Coverage Δ
jupyter_server/pytest_plugin.py	84.16% <100.00%> (ø)
jupyter_server/services/kernels/handlers.py	58.93% <0.00%> (+0.42%)	⬆️

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